A New Channel Assignment and Routing Scheme for Competitive and Cooperative Wireless Mesh Network (WMM)

Abstract

With a specific end goal to keep away from transmission's crashes and enhance arrange exhibitions in remote work systems (WMNs), a solid and effective medium get to control (MAC) convention and a decent channel allotment are required. Wireless mesh networks are multi hop networks of wireless routers, where each router node is equipped with multiple radio interfaces and multiple channels are available for communication. There is an increasing interest in using wireless mesh networks as broadband backbone networks to provide ubiquitous network connectivity in enterprises, campuses, and in metropolitan areas. An important design goal for wireless mesh networks is capacity. It is well-known that wireless interference severely limits network capacity in multi-hop settings. One common technique used to improve overall network capacity is use of multiple channels. Essentially, wireless interference can be minimized by using orthogonal (non-interfering) channels for neighboring wireless transmissions. The current IEEE 802.11 standard provides several orthogonal channels to facilitate the above. Presence of multiple channels requires us to address the problem of which channel to use for a particular transmission. The method which is used to assign the proper channel to a link is called Channel Assignment. The overall objective of such an assignment strategy is to minimize the overall network interference. Since the number of radios on any node can be less than the number of available channels, the channel assignment must obey the constraint that the number of different channels assigned to the links incident on any node is utmost the number of radio interfaces on that node. Routing is the process of finding a path from a source to some arbitrary destination on the network. A routing protocol is needed whenever a packet needs to be transmitted to a destination via number of nodes and numerous routing protocols have been proposed for wireless network. These protocols find a route for packet delivery and deliver the packet to the correct destination. In this paper, a joint Channel assignment and routing protocol are proposed to ensure low interference by assigning the non-overlapping channels to the multiple radios.